Multiple optical trapping based on high-order axially symmetric polarized beams

作者：Zhou Zhe-Hai^*; Zhu Lian-Qing

来源：Chinese Physics B, 2015, 24(2): 028704.

DOI：10.1088/1674-1056/24/2/028704

• optical trapping
• axially symmetric polarized beams
• Rayleigh scattering

Multiple optical trapping with high-order axially symmetric polarized beams (ASPBs) is studied theoretically, and a scheme based on far-field optical trapping with ASPBs is first proposed. The focused fields and the corresponding gradient forces on Rayleigh dielectric particles are calculated for the scheme. The calculated results indicate that multiple ultra-small focused spots can be achieved, and multiple nanometer-sized particles with refractive index higher than the ambient can be trapped simultaneously near these focused spots, which are expected to enhance the capabilities of traditional optical trapping systems and provide a solution for massive multiple optical trapping of nanometer-sized particles.

• 出版日期2015-2